Supergirl/The Flash: Worlds Finest – Check Out Over 30 Images From the Trailer

By Russ Burlingame With the release of a trailer earlier tonight, you can check out over 30 images from next week's "Worlds Finest" episode of Supergirl, which will feature the Girl of Steel (Melissa Benoist) teaming-up with The Flash (Grant Gustin).Kara gains a new ally when The Flash arrives from an alternate universe more